-YAZ_EXPORT int wrbuf_grow(WRBUF b, int minsize);
-YAZ_EXPORT int wrbuf_write(WRBUF b, const char *buf, int size);
-YAZ_EXPORT int wrbuf_xmlputs_n(WRBUF b, const char *cp, int size);
-YAZ_EXPORT int wrbuf_puts(WRBUF b, const char *buf);
-YAZ_EXPORT int wrbuf_puts_replace_char(WRBUF b, const char *buf,
- const char from, const char to);
-YAZ_EXPORT int wrbuf_xmlputs(WRBUF b, const char *cp);
+
+/** \brief writes (append) buffer to WRBUF */
+YAZ_EXPORT void wrbuf_write(WRBUF b, const char *buf, size_t size);
+/** \brief appends C-string to WRBUF (returns int) */
+YAZ_EXPORT void wrbuf_puts(WRBUF b, const char *buf);
+/** \brief appends C-string to WRBUF (void) */
+YAZ_EXPORT void wrbuf_vputs(const char *buf, void *client_data);
+
+/** \brief writes buffer to WRBUF and XML encode (as CDATA) */
+YAZ_EXPORT void wrbuf_xmlputs_n(WRBUF b, const char *cp, size_t size);
+/** \brief writes C-String to WRBUF and XML encode (as CDATA) */
+YAZ_EXPORT void wrbuf_xmlputs(WRBUF b, const char *cp);
+
+YAZ_EXPORT void wrbuf_puts_replace_char(WRBUF b, const char *buf,
+ const char from, const char to);
+
+/** \brief writes buffer to WRBUF and escape non-ASCII characters */
+YAZ_EXPORT void wrbuf_puts_escaped(WRBUF b, const char *str);
+
+/** \brief writes C-string to WRBUF and escape non-ASCII characters */
+YAZ_EXPORT void wrbuf_write_escaped(WRBUF b, const char *buf, size_t len);
+
+/** \brief writes printf result to WRBUF */